A Monte Carlo study of early gas expulsion and evolution of star clusters: new simulations with the MOCCA code in the amuse framework

被引：8

作者：

Leveque, A. ^{[1
]}

Giersz, M. ^{[1
]}

Banerjee, S. ^{[2
,3
]}

Vesperini, E. ^{[4
]}

Hong, J. ^{[5
,6
]}

Portegies Zwart, S. ^{[7
]}

机构：

[1] Polish Acad Sci, Nicolaus Copernicus Astron Ctr, ul Bartycka 18, PL-00716 Warsaw, Poland

[2] Helmholtz Inst Strahlen & Kernphys HISKP, Nussallee 14-16, D-53115 Bonn, Germany

[3] Argelander Inst Astron AIfA, Auf demugel 71, D-53121 Bonn, Germany

[4] Indiana Univ, Dept Astron, Swain West 727 E 3rd St, Bloomington, IN 47405 USA

[5] Yonsei Univ, Dept Astron, 50 Yonsei Ro, Seoul 03722, South Korea

[6] Korea Astron & Space Sci Inst, Daejeon 34055, South Korea

[7] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 514卷 / 04期

关键词：

galaxies: star clusters: general; methods: numerical; DYNAMICAL EVOLUTION; MASS; BINARY; I; POPULATION; MODELS;

D O I：

10.1093/mnras/stac1690

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We introduce a new prescription for the evolution of globular clusters (GCs) during the initial embedded gas phase into a Monte Carlo method. With a simplified version of the Monte Carlo MOCCA code embedded in the amuse framework, we study the survival of GCs after the removal of primordial gas. We first test our code and show that our results for the evolution of mass and Lagrangian radii are in good agreement with those obtained with N-body simulations. The Monte Carlo code enables a more rapid exploration of the evolution of systems with a larger number of stars than N-body simulations. We have carried out a new survey of simulations to explore the evolution of globular clusters with up to N = 500 000 stars for a range of different star formation efficiencies and half-mass radii. Our study shows the range of initial conditions leading to the clusters' dissolution and those for which the clusters can survive this early evolutionary phase.

引用

页码：5739 / 5750

页数：12

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